1,720,958 research outputs found
Remote Control Komunikasi Robot Berbasis Pergerakan Tangan Pada Smartphone Dengan Metode Logika Fuzzy
Full text linkRobot mobil (mobile robot) adalah sebuah mesin yang mampu bergerak
pada suatu kondisi tertentu. Robot mobil dapat diklasifikasi berdasarkan dua hal,
yaitu menurut lingkungan tempat robot tersebut bekerja dan alat kendali yang
digunakan untuk menggerakkan robot. Terdapat berbagai macam media yang
digunakan untuk mengendalikan robot, yaitu remote control, computer, joystick,
atau smartphone yang memiliki sensor accelerometer. Sensor accelerometer
merupakan sebuah sensor yang digunakan untuk merubah tampilan pada
smartphone menjadi portrait dan landscape, selain itu biasa juga digunakan untuk
permainan berjenis simulasi. Sensor ini dapat mengukur kemiringan suatu benda
karena memiliki 3 sumbu axis X, Y, dan Z. Ketiga sumbu tersebut dapat digunakan
untuk mengendalikan sebuah robot dengan koneksi antara dua platform yang
berbeda menggunakan media komunikasi bluetooth. Pada robot beroda,
pengendalian perintah robot untuk menggerakkan robot maju, mundur, belok kiri,
dan belok kanan dapat dilakukan berdasarkan kemiringan yang terdapat pada
accelerometer yang tertanam pada smartphone. Masih terdapat kelemahan pada
metode pengendalian ini, yaitu kecepatan robot yang konstan ketika digerakkan
sehingga kemungkinan robot menabrak halangan yang ada di depan sangatlah
besar.
Penelitian ini mengusulkan sebuah pengontrolan mobile robot melalui
gerakan tangan memanfaatkan sensor accelerometer yang terdapat pada
smartphone menggunakan media komunikasi bluetooth. Kecepatan motor DC
dikontrol dengan menggunakan logika fuzzy untuk menentukan kecepatan yang
sesuai dengan keadaan sehingga robot mobil tidak akan menabrak halangan.
Kecepatan motor DC digunakan sebagai masukan pada metode PWM (Pulse Width
Modulation) sebagai penggerak motor. Masukan jarak pada mobil robot didapatkan
dari sensor ultrasonik akan diproses oleh mikrokontroler. Hasil keluaran berupa
kecepatan putaran motor DC yang berubah secara adaptif berdasarkan informasi
jarak yang di kirim oleh sensor ultrasonik. Penggunaan metode tersebut membuat
pergerakan robot lebih halus dan lebih persisi pada saat berhenti ketika menemukan
halangan.
Dalam skenario ujicoba, digunakan beberapa kecepatan dan jarak pada
sebuah ruangan dengan tujuan untuk mengetahui performa gerakan robot ketika di
kontrol. Kecepatan yang digunakan adalah 160, 200 dan 240 pwm. Jarak yang
digunakan adalah 20, 30 ,40, 50, 60 dan 70 cm. Berdasarkan pengujian pada metode
usulan, diperoleh hasil nilai error terkecil yaitu pada jarak 50 cm dengan kecepatan
200 pwm. Hasil yang didapatkan dari sepuluh kali percobaan, robot berhenti secara
otomatis dengan nilai error melewati jarak yang ditentukan rata-rata 1.45 cm dari threshold jarak 50 cm. Hasil pengujian menunjukkan bahwa tingkat akurasi kontrol
menggunakan logika fuzzy memberikan hasil yang lebih baik dari segi akurasi
kontrol
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Robot car is a machine that is able to move in a certain condition. Robot
cars can be classified based on two things, depending on the environment the robot
works and control device that used to move the robot. There are various kinds of
media are used to control the robot, i.e. remote control, computer, joystick, or a
smartphone which has an accelerometer sensor. The accelerometer sensor is a
sensor that is used to change the screen orientation on a smartphone, but it is also
commonly used for game with simulation genre. This sensor can measure the slope
of an object because it has a 3-axis axis X, Y, and Z. All three of these axes can be
used to control a robot with the connection between the two different platforms
using bluetooth. On wheeled robots, control command the robot to move the robot
forward, backward, turn left, and turn right to do based on the slope contained in
accelerometer embedded on the smartphone. There is a weakness in this control
method, the robot speed constant when it is moved so there is high possibility of
robots to bumping into the obstacles.
This study proposes a mobile robot control through hand movements utilize the
accelerometer sensor which is embedded on the smartphone using Bluetooth. DC
motor speed is controlled by using fuzzy logic to determine the speed appropriate
to the circumstances so that the robot car will not bump the obstacle. DC motor
speed are used as input to the method of PWM (Pulse Width Modulation) as a motor
drive. The distance on the car robot as an input obtained from the ultrasonic sensors
processed by the microcontroller. The result of the output of the DC motor rotation
speed is changed adaptively based on the distance information that is sent by the
ultrasonic sensor. The use of this method makes the movement of the robot is
smoother and more precise to stop when it finds an obstacle.
In the test scenario, used some of the speed and distance of a room in order
to determine the performance of the robot's movement when in control. The speed
used was 160, 200 and 240 pwm. The distances used are 20, 30, 40, 50, 60 and 70
cm. Based on testing on the proposed method, the smallest error value is at a
distance of 50 cm with a speed of 200 pwm. Results that obtained from ten
experiments, the robot stopped automatically with the error value passes a specified
distance average of 1.45 cm from a distance of 50 cm threshold. The test results
show that the level of accuracy control using fuzzy logic gives better results in terms
of control accurac
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Penerapan Sistem Informasi Berbasis Digital dalam Mendukung Transparansi dan Akuntabilitas Pengelolaan Kegiatan Karang Taruna Kecamatan Bantan
Full text linkPerkembangan teknologi yang cepat sangat berpengaruh terhadap penyampaian dan penyebaran pesan ke berbagai kalangan. Saat ini belum ada tempat yang digunakan sebagai media untuk menyebarkan infomasi dan melakukan dokumentasi kegiatan pada organisasi kepemudaan pada Karang Taruna Kecamatan Bantan. Sehingga mengakibatkan semua informasi penting yang sedang terjadi pada karang taruna mengalami keterlambatan informasi atau pesan yang ingin di sampaikan kurang jelas dan lengkap serta dokumentasi dari setiap kegiatan tidak tekelola dengan baik. Tujuan dari pengabdian kepada masyarakat ini adalah untuk merancang dan menerapkan sistem informasi berbasis digital dalam mendukung transparansi dan akuntabilitas pengelolaan kegiatan karang taruna Kecamatan Bantan. Dalam proses rancang bangun sistem informasi ini menggunakan metode waterfall pemodelan UML (unified modeling language) serta menerapkan pengujian black box untuk tahapan pengujian sistem. Dengan menggunakan metode waterfall dalam perancangan sistem informasi ini proses perancangan menjadi lebih teliti dan lebih terarah
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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